REDWOOD CITY — A Stanford University graduate student was sentenced to a year in jail Tuesday for violently beating his ex-girlfriend in her Menlo Park home.

Yishun Dong, of Mountain View, will begin his one-year county jail sentence June 13, nearly one year after he beat his ex-girlfriend so badly she required surgery. Dong, 33, was convicted in February on felony domestic violence charges for the brutal assault.

Dong met the victim in 2013 through a graduate engineering program at Stanford University, where both of them were Ph.D candidates, District Attorney Steve Wagstaffe said. Dong and the victim dated for a year but broke up in June 2014.

According to prosecutors, Dong went to the victim”s Menlo Park home July 19 and angrily hit the woman six or seven times. The blows fractured the woman”s eye socket and forced her into surgery, at which point hospital staff called police.

While the victim initially denied she had been beaten, she eventually implicated Dong as her attacker, Wagstaffe said.

In addition to his sentence, Dong will serve three years probation and was ordered to take 104 hours of domestic violence counseling and perform 30 hours of community service, the DA said.

Dong”s attorney, John Halley, could not immediately be reached for comment.